Production of negative ions and generation of intense neutral beams by laser irradiation

1974 ◽  
Vol 25 (10) ◽  
pp. 579-580 ◽  
Author(s):  
A. Y. Wong ◽  
J. M. Dawson ◽  
W. Gekelman ◽  
Z. Lucky
Keyword(s):  
Laser Irradiation ◽  
Negative Ions ◽  
Neutral Beams

Transient signals induced by laser irradiation of negative ions in hollow electrode discharges of Cl2and HCl in N2

1990 ◽  
Vol 68 (6) ◽  
pp. 2649-2656 ◽  
Author(s):  
J. C. Han ◽  
Masako Suto ◽  
J. C. Lee ◽  
Z. Lj. Petrović
Keyword(s):  
Laser Irradiation ◽  
Negative Ions ◽  
Transient Signals ◽  
Hollow Electrode

Large negative ions source for energetic neutral beams

1984 ◽  
Author(s):  
M. Delaunay ◽  
R. Geller ◽  
C. Jacquot ◽  
P. Ludwig ◽  
P. Sermet ◽  
...  
Keyword(s):  
Negative Ions ◽  
Neutral Beams

Propagation of charge-neutral beams in space: Modifications when negative ions are present

1987 ◽  
Vol 30 (11) ◽  
pp. 3587 ◽  
Author(s):  
R. M. Winglee ◽  
P. L. Pritchett
Keyword(s):  
Negative Ions ◽  
Neutral Beams

Chronic Laser Exposure Effects on Rabbit Retina

1972 ◽  
Vol 30 ◽  
pp. 54-55
Author(s):  
Burton B. Silver ◽  
Theodore Lawwill
Keyword(s):  
Laser Irradiation ◽  
Laser Light ◽  
Broad Band ◽  
Argon Laser ◽  
Atropine Sulfate ◽  
Ultrastructural Changes ◽  
Laser Exposure ◽  
Rabbit Retina ◽  
Histological Changes ◽  
Threshold Doses

Dutch-belted 1 to 2.5 kg anesthetized rabbits were exposed to either xenon or argon laser light administered in a broad band, designed to cover large areas of the retina. For laser exposure, the pupil was dilated with atropine sulfate 1% and pheny lephrine 10%. All of the laser generated power was within a band centered at 5145.0 Anstroms. Established threshold for 4 hour exposures to laser irradiation are in the order of 25-35 microwatts/cm2. Animals examined for ultrastructural changes received 4 hour threshold doses. These animals exhibited ERG, opthalmascopic, and histological changes consistent with threshold damage.One month following exposure the rabbits were killed with pentobarbitol. The eyes were immediately enucleated and dissected while bathed in 3% phosphate buffered gluteraldehyde.

Microstructural changes of Aluminum Nitride after laser irradiation and electroless copper deposition

1994 ◽  
Vol 52 ◽  
pp. 636-637
Author(s):  
S. Cao ◽  
A. J. Pedraza ◽  
L. F. Allard
Keyword(s):  
Aluminum Nitride ◽  
Laser Irradiation ◽  
Electroless Deposition ◽  
Thermal Evaporation ◽  
Surface Region ◽  
Near Surface ◽  
Laser Patterning ◽  
Electroless Copper ◽  
Excimer Laser Irradiation ◽  
Laser Effect

Excimer-laser irradiation strongly modifies the near-surface region of aluminum nitride (AIN) substrates. The surface acquires a distinctive metallic appearance and the electrical resistivity of the near-surface region drastically decreases after laser irradiation. These results indicate that Al forms at the surface as a result of the decomposition of the Al (which has been confirmed by XPS). A computer model that incorporates two opposing phenomena, decomposition of the AIN that leaves a metallic Al film on the surface, and thermal evaporation of the Al, demonstrated that saturation of film thickness and, hence, of electrical resistance is reached when the rate of Al evaporation equals the rate of AIN decomposition. In an electroless copper bath, Cu is only deposited in laser-irradiated areas. This laser effect has been designated laser activation for electroless deposition. Laser activation eliminates the need of seeding for nucleating the initial layer of electroless Cu. Thus, AIN metallization can be achieved by laser patterning followed by electroless deposition.

Studies on the mechanism of printing film-coated tablets containing titanium dioxide in the film by using UV laser irradiation

2009 ◽  
Vol 00 (00) ◽  
pp. 090915102728058-8
Author(s):  
Yoshiteru Kato ◽  
Yasuhiko Nakashima ◽  
Naoki Shino ◽  
Koichi Sasaki ◽  
Akihiro Hosokawa ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Laser Irradiation ◽  
Uv Laser

Modification of structural and transport properties in epitaxial YBa2CU3Ox films by pulsed laser irradiation

1993 ◽  
Vol 3 (12) ◽  
pp. 2173-2188
Author(s):  
N. G. Chechenin ◽  
A. V. Chernysh ◽  
V. V. Korneev ◽  
E. V. Monakhov ◽  
B. V. Seleznev
Keyword(s):  
Transport Properties ◽  
Laser Irradiation ◽  
Pulsed Laser ◽  
Pulsed Laser Irradiation
Sign in / Sign up

Export Citation Format

Share Document